Granted Patent B2

US 12,655,053 · App. 17/611,563 · Granted Jun 16, 2026

Inventors: Ping He (Wuhan, CN); Liang Sun (Wuhan, CN)

Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.

C03B23/023

Abstract

Claims (26)

1 . A forming apparatus for a curved display panel, comprising:

a mapping structure comprising a plurality of pins movable in a vertical direction, wherein one end of each of the pins is configured to attach to a display panel; and

a copying jig comprising a copying surface disposed under the mapping structure;

wherein the copying jig is configured to be driven to make the copying surface attach to another end of each of the pins away from the display panel, the copying surface comprises a first planar copying surface, a second planar copying surface, and a curved copying surface located between the first planar copying surface and the second planar copying surface, each of the pins corresponding to the first planar copying surface and the second copying surface has a same rising height and each of the pins corresponding to the curved copying surface has a different rising height, and

wherein each of the plurality of pins is provided with cushions at an end configured to attach to the display panel, a surface energy of the cushions of the pins corresponding to the curved copying surface is less than a surface energy of the cushions of the pins corresponding to the first planar copying surface, and wherein the surface energy refers to an excess energy on a surface of a material relative to an interior of the material.

2 . The forming apparatus of claim 1 , wherein a height difference between the first planar copying surface and the second planar copying surface is H, a curvature radius of the curved copying surface is R, and a distance between the curved copying surface and the plurality of pins corresponding to the curved copying surface is P, and wherein

P

≤

2

⁢

HR

-

H

2

2

.

3 . The forming apparatus of claim 2 , wherein the curved copying surface surrounds the first planar copying surface, the second planar copying surface surrounds the curved copying surface, and the first planar copying surface is rectangle shaped, the curved copying surface is ring shaped, and the second planar copying surface is ring shaped.

4 . The forming apparatus of claim 2 , wherein each of the pins comprises a pin body, a cushion located at one end of the pin body, and a lubricating layer located at another end of the pin body, the cushion is configured to attach to the display panel, and the lubricating layer is configured to attach to the copying surface.

5 . The forming apparatus of claim 4 , wherein an elastic modulus of the cushions ranges from 1 giga Pascal (GPa) to 1.4 GPa, and a surface friction coefficient of the lubricating layers ranges from 0.02 to 0.10.

6 . The forming apparatus of claim 4 , wherein side surfaces of the pin bodies corresponding to the curved copying surface are uneven surfaces.

7 . The forming apparatus of claim 6 , wherein a friction coefficient of side surfaces of the pin bodies corresponding to the first planar copying surface is less than a friction coefficient of the side surfaces of the pin bodies corresponding to the curved copying surface.

8 . The forming apparatus of claim 4 , wherein a distance between the pins corresponding to the first planar copying surface and the second planar copying surface is greater than or equal to a distance between the pins corresponding to the curved copying surface.

9 . The forming apparatus of claim 4 , wherein a width of the pins corresponding to the first planar copying surface and the second planar copying surface is greater than or equal to a width of the pins corresponding to the curved copying surface.

10 . The forming apparatus of claim 1 , wherein the mapping structure is attached to the display panel through an adhesive layer, and the cushions of the pins corresponding to the curved copying surface are not bonded with the adhesive layer, and the cushions of the pins corresponding to the first planar copying surface are bonded with the adhesive layer.

11 . The forming apparatus of claim 10 , wherein the cushions of the pins corresponding to the curved copying surface are doped with a lubricant.

12 . The forming apparatus of claim 1 , wherein the mapping structure comprises a base, the base comprises a plurality of limiting holes, and the pins are located in the limiting holes in a one-to-one correspondence and extend outwardly from the limiting hole.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (51)